/** * Removes the entire roster of a given user. This is necessary when a user account is being * deleted from the server. * * @param user the user. */ public void deleteRoster(JID user) { try { String username = user.getNode(); // Get the roster of the deleted user Roster roster = (Roster) CacheManager.getCache("username2roster").get(username); if (roster == null) { // Not in cache so load a new one: roster = new Roster(username); } // Remove each roster item from the user's roster for (RosterItem item : roster.getRosterItems()) { try { roster.deleteRosterItem(item.getJid(), false); } catch (SharedGroupException e) { // Do nothing. We shouldn't have this exception since we disabled the checkings } } // Remove the cached roster from memory CacheManager.getCache("username2roster").remove(username); // Get the rosters that have a reference to the deleted user RosterItemProvider rosteItemProvider = RosterItemProvider.getInstance(); Iterator<String> usernames = rosteItemProvider.getUsernames(user.toBareJID()); while (usernames.hasNext()) { username = usernames.next(); // Get the roster that has a reference to the deleted user roster = (Roster) CacheManager.getCache("username2roster").get(username); if (roster == null) { // Not in cache so load a new one: roster = new Roster(username); } // Remove the deleted user reference from this roster try { roster.deleteRosterItem(user, false); } catch (SharedGroupException e) { // Do nothing. We shouldn't have this exception since we disabled the checkings } } } catch (UnsupportedOperationException e) { // Do nothing } }